Reddit, actually. I don't read comments, but I do have a pretty beefy set of sub-reddits which are able to find a lot of good reads. My sub-reddits:

browsers, business, c_language, C_Programming, cogsci, compsci, computergraphics, computers, ComputerSecurity, economy, energy, erlang, Flash_Programming, functional, functionallang, geek, hacking, haskell, javascript, lectures, linux, lisp, math, operabrowser, plt, programming, ProgrammingLanguages, Python, robotics, ruby, scheme, science, software, softwaredevelopment, startups, technology, tedtalks, virtualization, web_design, and for fun WebGames,